Printed really nicely as is. All the parts fit together and function as intended. I have not tried them with lube yet. I may actually try re-printing them with a smaller layer height, to see if I can get the plunger action to be smoother. Maybe I'll remix this and add a groove for a TPU o-ring. Maybe a print-in-place one?...

Printed great in ABS, and fits well in the AMS 2. Strong and convenient.